This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 3 |
| 2 | 7 |
| 3 | 16 |
| 4 | 35 |
| 5 | 75 |
| 6 | 159 |
| 7 | 334 |
| 8 | 696 |
| 9 | 1442 |
| 10 | 2976 |
| 11 | 6123 |
| 12 | 12562 |
| 13 | 25706 |
| 14 | 52492 |
| 15 | 107014 |
| 16 | 217877 |
| 17 | 443061 |
| 18 | 899957 |
| 19 | 1826078 |
| 20 | 3701783 |
| 21 | 7498261 |
| 22 | 15178255 |
| 23 | 30706320 |
| 24 | 62085915 |
| 25 | 125465715 |
| 26 | 253415981 |
| 27 | 511608490 |
| 28 | 1032427637 |
| 29 | 2082680887 |
| 30 | 4199956101 |
| 31 | 8467124805 |
| 32 | 17064784905 |
| 33 | 34382825363 |
| 34 | 69256687719 |
| 35 | 139465867773 |